Brock said the office became aware of Johnson's timesheet irregularities several weeks ago while responding to a public records request made in April by the Democratic-leaning blog Plunderbund.

The blog asked for records that included timesheets and parking logs for Johnson and the assistant. Brock says the matter has been referred to the inspector general and the State Highway Patrol to review.

Taylor is Gov. John Kasich's running mate this fall as he seeks re-election.